Giải giúp mình với ạ

Đáp án:

$3.$ Lan saw you in the park last week.

$→$ Lan didn't see you in the park last week.

$→$ Did Lan see you in the park last week?

$4.$ We were in the countryside last summer.

$→$ We didn't be in the countryside last summer.

$→$ Did we be in the countryside last summer?

$5.$ Mrs. Robinson bought a poster.

$→$ Mrs. Robinson didn't buy a poster.

$→$ Did Mrs. Robinson buy a poster?

$6.$ Liz enjoyed her vacation in Da Lat last year.

$→$ Liz didn't enjoy her vacation in Da Lat last year.

$→$ Did Liz enjoy her vacation in Da Lat last year?

$7.$ Her aunt gave her a new skirt.

$→$ Her aunt didn't give her a new skirt.

$→$ Did her aunt give her a new skirt?
$8.$ He was in our class two hours ago.

$→$ He didn't be in our class two hours ago.

$→$ Did he be in our class two hours ago?

$9.$ They watched a good footballmatch on TV last night.

$(-)$ They didn't watch a good footballmatch on TV last night.

$(?)$ Did they watch a good footballmatch on TV last night?

10. Peter sent that letter to Marry yesterday morning.

$(-)$ Peter didn't send that letter to Marry yesterday morning.

$(?)$ Did Peter send that letter to Marry yesterday morning?

11. Jane's mother bought a new car last month.

$(-)$ Jane's mother didn't buy a new car last month.

$(?)$ Did Jane's mother buy a new car last month?

12. We visited Halong Bay three years ago.

$(-)$ We didn't visit Halong Bay three years ago.

$(?)$ Did we visit Halong Bay three years ago?

13. They left for Hai Phong in 1999.

$(-)$ They didn't leave for Hai Phong in 1999.

$(?)$ Did they leave for Hai Phong in 1999?

14. They built a new school in my village ten month ago.

$(-)$ They didn't build a new school in my village ten month ago.

$(?)$ Did they build a new school in my village ten month ago?

15. I borrowed a lot of book in the library last weekend.

$(-)$ I didn't borrow a lot of book in the library last weekend.

$(?)$ Did I borrow a lot of book in the library last weekend?

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* Giải thích:

Công thức thì quá khứ đơn:

$\text{(+) $S$ + $be$ / $V_e$$_d$ + ..... ($be$ : $was$/ $were$)}$

$\text{($-$) $S$ + $did$ + $not$ + $V$ + ....}$

$\text{($?$) $Did$ + $S$ + $V$ + ....?}$

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